PDF malware analysis — malicious · 869f214add1be85c

MALICIOUS

PDF

44.1 KB Created: 2020-09-04 18:55:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 93f8438fe2126993800a8b6380f3c3e8 SHA-1: 2f6147e6c22aeea77e39a14e11d6034c5d410a64 SHA-256: 869f214add1be85c696c342810215b85481d8c98ab9713584866a22b82b349ff

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file contains a large number of embedded links, many of which point to external resources, suggesting a link farm or redirection attempt. One prominent URL, 'https://ttraff.me/pify?keyword=bad+romance+acoustic+piano+sheet', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other Shopify links, indicating a potential phishing or malware distribution scheme.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://ttraff.me/pify?keyword=bad+romance+acoustic+piano+sheet
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0433/0058/5636/files/mu_origin_hack_android.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/44368867506.pdf
- https://cdn.shopify.com/s/files/1/0437/8204/5858/files/mi_chica_revolucionaria_mega.pdf
- https://cdn.shopify.com/s/files/1/0438/8116/9051/files/2016_subaru_outback_maintenance_schedule.pdf
- https://cdn.shopify.com/s/files/1/0432/2073/0020/files/64646792351.pdf
- https://static.usrfiles.com/ugd/229b11_8ecae385e9e842ac9a8351d65db317d2.pdf
- https://static.usrfiles.com/ugd/70094d_e36dd8d284254a71870150c01d50742a.pdf
- https://static.usrfiles.com/ugd/afe78f_cea53b441c6b413a93bb2c56fbde5ce7.pdf
- https://static.usrfiles.com/ugd/4d6844_8cdc29950e5e4daaab620915d548bab2.pdf
- https://static.usrfiles.com/ugd/ef7486_3cf653afa8c9433fafb2f7577bd21e2b.pdf
- https://static.usrfiles.com/ugd/e66789_5719d371994f475f8ceaf83028c79f99.pdf
- https://static.usrfiles.com/ugd/6f58fb_e2326be5ad514b7e9e047765055c85df.pdf
- https://static.usrfiles.com/ugd/b8c837_8e04610e10ff46a4b195ffd7d0581162.pdf
- https://static.usrfiles.com/ugd/0cd019_454a39dfc9624187a52dfa878b67ec6e.pdf
- https://static.usrfiles.com/ugd/10e3af_375923f6e1934cb7a2bbe8794c142889.pdf
- https://static.usrfiles.com/ugd/b8c837_dd79669ea32441c2a7b886e7b9b0e282.pdf
- https://static.usrfiles.com/ugd/c0a468_93249f58eff64ce48c3cad902a97c3f9.pdf
- https://static.usrfiles.com/ugd/b8c837_c501d8fa13944c5da4245ccb5664cdc9.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000608c.bin` `7ba25ab4a2e6eac5219e856504c0e038a9351699dbf7bd3c631a5e091035ac67`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x608C	5332 bytes
`font_01_sfnt_off0000727f.bin` `b6c434cb54d33fb8a747893ae36a93ccb419bba6c513a8a61e3462d8629d5353`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x727F	14784 bytes

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